How to open ABK file

Different applications (for example CorelDRAW, Ability Office Write or PrintMaster Gold) backup file with a backup of the currently opened document or project. This file is used for restoring application information in case of a computer crash or file corruption. ABK files should not be opened manually.

Arena (freeware graphical user interface that is used by chess engines) file with "opening book" moves that contain opening strategies for an artificial intelligence player. It can include millions of predetermined moves. ABK files are used for reducing the computational expense of determining optimal strategies for the first several moves of a chess match.